Pilot-scale study of removal effect on Chironomid larvae with chlorine dioxide  

作　　者：SUN Xing-bin CUI Fu-yi ZHANG Jin-song GUO Zhao-hai ZHAO Kai LIU Li-jun LV Wei-min 

机构地区：[1]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China [2]Water Research Institute, Shenzhen Water Group, Shenzhen 518001, China [3]State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Beijing 100085, China [4]Heilongjiang Province Light Industrial Science Research, Harbin 150010, China

出　　处：《Journal of Environmental Sciences》2006年第2期248-253,共6页环境科学学报（英文版）

基　　金：TheN ationalN aturalScienceFoundationofChina(No.503780262);theH i-TechResearchandDevelopm entProgram (863)ofChina(No.2002A A601120)andtheSpecializedResearchFundfortheDoctoralProgram ofHigherEducation(No.20030213036)

摘　　要：Chironomid larvae propagated excessively in eutrophic water body and could not be effectively inactivated by the conventional disinfection process like chlorination due to its stronger resistance to oxidation. In this paper, a pilot-scale study of chlorine dioxide preoxidation cooperating with routine clarification process for Chironomid larvae removal was conducted in Shenzhen Waterworks in Guangdong Province, China. The experimental results were compared with that of the existing prechlorination process in several aspects, including the Chironomid larvae removal efficiencies of water samples taken from the outlets of sedimentation tank, sand filter, the security of drinking water and so on. The results showed that chlorine dioxide might be more effective to inactivate Chironomid larvae than chlorine and Chironomid larvae could be thoroughly removed from water by pre-dosing chlorine dioxide process. The GC-MS examination and Ames test further showed that the sort and amount of organic substance in the treated water by chlorine dioxide preoxidation were evidently less than that ofprechlorination and the mutagenicity of drinking water treated by pre-dosing chlorine dioxide was substantially reduced compared with prechlorination.Chironomid larvae propagated excessively in eutrophic water body and could not be effectively inactivated by the conventional disinfection process like chlorination due to its stronger resistance to oxidation. In this paper, a pilot-scale study of chlorine dioxide preoxidation cooperating with routine clarification process for Chironomid larvae removal was conducted in Shenzhen Waterworks in Guangdong Province, China. The experimental results were compared with that of the existing prechlorination process in several aspects, including the Chironomid larvae removal efficiencies of water samples taken from the outlets of sedimentation tank, sand filter, the security of drinking water and so on. The results showed that chlorine dioxide might be more effective to inactivate Chironomid larvae than chlorine and Chironomid larvae could be thoroughly removed from water by pre-dosing chlorine dioxide process. The GC-MS examination and Ames test further showed that the sort and amount of organic substance in the treated water by chlorine dioxide preoxidation were evidently less than that ofprechlorination and the mutagenicity of drinking water treated by pre-dosing chlorine dioxide was substantially reduced compared with prechlorination.

关 键 词：Chironomid larvae chlorine dioxide CHLORINE PREOXIDATION water treatment 

分 类 号：X52[环境科学与工程—环境工程] TU991.25[建筑科学—市政工程]